Finding the Fourth Proportional to 1,360.24, 1,877.04 and 800.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.24 : 1,877.04 = 800.80 : x
2. Step 2: Convert to fraction form
   1,360.24/1,877.04 = 800.80/x
3. Step 3: Cross multiply
   1,360.24x = 1,877.04 × 800.80
4. Step 4: Simplify right side
   1,360.24x = 1,503,133.63
5. Step 5: Solve for x
   x = 1,503,133.63/1,360.24
6. Step 6: Final answer
   x = 1,105.05